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120 lines
3.6 KiB
Groff
120 lines
3.6 KiB
Groff
.TH ALSAMIXER 1 "25 Nov 1998"
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.SH NAME
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alsamixer \- soundcard mixer for ALSA soundcard driver, with ncurses interface
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.SH SYNOPSIS
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\fBalsamixer\fP [\fIoptions\fP]
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.SH DESCRIPTION
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\fBalsamixer\fP is an ncurses mixer program for use with the ALSA
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soundcard drivers. It supports multiple soundcards with multiple devices.
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.SH INVOKING
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\fBalsamixer\fP [\fIoptions\fP]
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.SS Options
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.TP
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\fI-h, -help\fP
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Help: show available flags.
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.TP
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\fI-c\fP <card number>
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Select the soundcard to use, if you have more than one. Cards are
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numbered from 1 (the default).
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.TP
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\fI-m\fP <device number>
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Select the soundcard device to control, if your card has more than
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one. Devices are numbered from 0 (the default). Not to be confused
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with the soundcard mixer channels, which are sometimes also referred
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to as "devices", just to be annoying. Many soundcards will only have
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device 0. Some more complex cards may have more. This flag corresponds
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to the -d flag for \fBamixer\fP, \fBarecord\fP, and \fBaplay\fP.
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.TP
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\fI-e\fP
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Start in "exact mode." This will affect the numbers you see displayed
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for volumes, but does not affect operation of the level controls.
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The default behavior is to show levels in percent from 0 to 100. This
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is easy to read, but can mislead you about how much control the
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soundcard actually lets you have. Exact mode, on the other hand, shows
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you the settings as the soundcard itself understands them. In exact
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mode, each channel level is between 0 and a power of 2 minus one
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(e.g. 0-7, or 0-63). Exact mode may also be toggled while alsamixer is
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running, by using \fITAB\fP.
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.SH KEYBOARD COMMANDS
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\fBalsamixer\fP recognizes the following keyboard commands to control the soundcard.
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.SS
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General Controls
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The \fILeft\fP and \fIright arrow\fP keys are used to select the
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channel (or device, depending on your preferred terminology). You can
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also use \fIn\fP ("next") and \fIp\fP ("previous").
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The \fIUp\fP and \fIDown Arrows\fP control the volume for the
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currently selected device. You can also use \fI+\fP or \fI-\fP for the
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same purpose. Both the left and right signals are affected. For
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independent left and right control, see below.
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\fIM\fP toggles muting for the current channel (both left and right). You can
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mute left and right independently by using \fI,\fP and \fI.\fP respectively.
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\fISPACE\fP toggles recording: the current channel will be added or
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removed from the sources used for recording. This only works for valid
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input channels, of course.
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\fIR\fP toggle display of playback or record mixer.
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\fIL\fP re-draws the screen.
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\fITAB\fP toggles the mode for volume display. See description for the
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\fI-e\fP flag above.
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.SS
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Quick Volume Changes
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\fIPageUp\fP increases volume by 10.
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\fIPageDown\fP decreases volume by 10.
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\fIHome\fP sets volume to maximum.
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\fIEnd\fP sets volume to 0.
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You can also control left & right levels for the current channel
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independently, as follows:
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[\fIQ\fP | \fIW\fP | \fIE\fP ] -- turn UP [ left | both | right ]
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[\fIZ\fP | \fIX\fP | \fIC\fP ] -- turn DOWN [ left | both | right ]
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If the currently selected mixer channel is not a stereo channel, then
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all UP keys will work like \fIW\fP, and all DOWN keys will work like \fIX\fP.
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.SS
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Exiting
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Quit the program with \fIALT Q\fP, or by hitting \fIESC\fP.
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.SH SEE ALSO
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\fB
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amixer(1),
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arecord(1)
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\fP
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.SH BUGS
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There is no help screen implemented yet. Some terminal emulators
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(e.g. \fBnxterm\fP) may not
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work quite right with ncurses, but that's their own damn
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fault. Plain old \fBxterm\fP seems to be fine.
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.SH AUTHOR
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.B alsamixer
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has been written by Tim Janik <timj@gtk.org> and
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been furtherly improved by Jaroslav Kysela <perex@suse.cz>.
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This manual page was provided by Paul Winkler <zarmzarm@erols.com>.
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